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Short answer: there is no "tuner" that will work with StarChoice.
Long answer: a "tuner" is a device that translates RF signals from and antenna or cable line into electronic signals. Terrestrial, satellite, and cable signals are all different.[...]
You can buy a satellite "tuner" that will receive the DVB-S (I think) signals from the StarChoice satellites. It will accept the RF signals collected by your dish and translate them into binary data that the computer can see. This is probably illegal in Canada. The data you get is encrypted [...], so no one has bothered breaking it. [...]
The only real option you have right now for recording HD video from your StarChoice box is the Hauppauge HD PVR. This exploits the analog hole and allows you to record the HD signals from the component video output of your set top box. This is not a tuner because it does not receive RF frequencies. It is a video capture box and a serious kludge. It even comes with a WebTV era "IR Blaster" that pretends to be a remote control and changes the channels for you.
Você pode conectar o receptor de satélite fornecido pela StarChoice ao seu computador usando RF (um cabo coaxial) em apenas uma placa sintonizadora digital comum? Se você puder, então você pode usar isso e o Windows Media Center deve ser capaz de gravar isso muito bem, embora eu não tenha certeza se você seria capaz de mudar de canal no Media Center, ou se você precisaria mudá-los em seu receptor de satélite.